Air New Zealand confirmed the incident – and the refund – in a statement to Stuff.

"Air New Zealand flight NZ5715 from Christchurch to Invercargill last night experienced strong turbulence during the descent. The flight made a normal landing in Invercargill, however, emergency services were on hand to provide assistance to some customers who were feeling unwell.

"At least one customer has contacted the airline today saying the refund offer is appreciated but unnecessary."